19790760169 has 2 divisors, whose sum is σ = 19790760170. Its totient is φ = 19790760168.

The previous prime is 19790760109. The next prime is 19790760211. The reversal of 19790760169 is 96106709791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15058971225 + 4731788944 = 122715^2 + 68788^2 .

It is a cyclic number.

It is not a de Polignac number, because 19790760169 - 2²³ = 19782371561 is a prime.

It is a super-2 number, since 2×19790760169² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (19790760109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9895380084 + 9895380085.

It is an arithmetic number, because the mean of its divisors is an integer number (9895380085).

Almost surely, 2^19790760169 is an apocalyptic number.

It is an amenable number.

19790760169 is a deficient number, since it is larger than the sum of its proper divisors (1).

19790760169 is an equidigital number, since it uses as much as digits as its factorization.

19790760169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1285956, while the sum is 55.

The spelling of 19790760169 in words is "nineteen billion, seven hundred ninety million, seven hundred sixty thousand, one hundred sixty-nine".